Lubricating-cup.



parts to which the same is attached.

CLAREJIK TF C. DAVIS. OF PROVIDENCE. RHODE ISLAND. ASSIGNOR OF ONE-HALF'TU WILLIAM HALKYARI). OF NORTH KINGSTON, RHODE ISLAND.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed February 17. 1906. Serial 2 0. 301,661.

To all whom it may concern:

Be it known that I, CLARENCE C. DAVIS. a citizen of the United States, residing at the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Lubricating-Cups, of which the following a specification, referencebeing had therein to the accompanying drawings.

This invention relates to luhricatingcups. and has for its object to provide a lubricating-cup that is more particularly adapted to be filled with grease and to feed said grease in the quantity desired to the bearingnclar e ordinary grease cup used for this purpose is provided with a piston that is actuated by a threaded shank screwed through a nut in the head, and when it is desired to feed the grease down the screw is rotated by the attendant and a. quantity of the contents forced out. I

' The essential feature of my improved grease-cup is that the contents of the same may be fed automatically therefrom by the action of a spring upon a piston, and mechanism has also been provided whereby suit able threaded dogs may be thrown into engage ment with the threaded piston-spindle, so that said piston may also be actuated by screw-pressure, if desired.

Another feature of this invention is that these tlnc' cd dogs may be instantly diseng ed from the spindle, allowing said spindle and the piston to which it is attached to be moved freely up or down and by this construction, when it is desired to till the cup, the piston may be quickly drawn upward to the extreme end of its stroke and locked in that position by throwing the dogs into engagement with said spindle. After filling the cup and replacing the cap the piston may then be made to act automatically by simply turning the cam-collar and withdrawing the dogs. spring to act on the piston and force the grease from the cup to the desired parts. hen the piston is acting automatically on the contents of the cup. the flow or quantity forced out may be nicely regulated by the adjustment of the stop-cock. which is in the discharge-neck of the cup.

The invention is fully set f w n this specithereby allowing the fication and more particularly pointed out in the appended claims.

In the accompanyingdrawings, Figure 1 is a view of my lubricating-cup in section. showing the actuating mechanism. Fig. 2 is a top view of the cup showing a section on as having been thrown into engagement with the threaded spindle. Fig. 3 is a view similar to Fig. 2. illustrating the said dogs as thrown out of engagement with the threaded spindle. Fig. -l is a sectional view on line 4 4 of Fig. 7, showing the dogs in their disengaged position and that portion of the collar that engages said dogs to throw them toward the center, Fig. 5 is a section of the collar on line 5 5 of Fig. 7. Fig. 6 is a section of said collar on line 6 6 of Fig. 7. Fig. 7 is a side elevation of the lockin -collar. Fig. 8 is a top view ing the cam portion by which said dogs are thrown outward. Fig. 9 is a view of the under side of one of said dogs, showing the cam portion by which said dogs are thrown in- .ward. Fig. 10 is aside elevation of one of the dogs. Fig. 11 is a section at 11 ll of Fig. 10. -I:ig. 12 is a section at 1'2 12 of Fig. 10. Fig. 13 is a detail showing the boss on the upper face of the cap and the plate secured thereto that holds the cam-collar in position.

portion of the-cup, which is provided with a dischargeqieck 2 at its lower end. This neck is preferably provided with :1 threaded portion 3. whereby the cup may be readily attached to the parts where the'cup is to operate. This neck is also provided with a plugcock -l, which may be adjusted to nicely control the velocity with which the grease is forced from the cup. The lower portion or bottom of the cup 5 is preferably made somewhat tapering or funnel shape to facilitate the forcing of the grease therefrom neck. The upper end of thiscup at 6 is preferably threaded to receive the cap 7, that is adapted to be screwed onto the same. Extending upward from the upper face of this cap is the boss 8, (see Fig. 13,) through which is formed the hole 9, made large enough so that the threaded piston-stem 10 i may work freely through the same. The camcollar 11 is designed to fit over this boss 8,

line 2 '2 of Fig. 1 showing the threaded dogsv of one of the threaded dogs; show Referring to the drawings, at l is the body through the contracted opening through the so that it"may be'rotated thereon and is held inposition by the plate 12 that is secured to said boss by the screws 13 13. This camcollar is provided with actuating-handles 2O 20 and is cut away-at 14 14 (see Figs. 4 and for the reception of the pair of threaded faced dogs 15 15, which dogs are adapted to work endwise through said collar and also through suitable apertures in the saidboss IO '8. T

ese dogs work from either side both in and out to and from the center. (See Figs. 2'and 3.) At 16 16, as shown in Fig. 3.

' are cam-faces on said collar that are adapted jto engage corresponding cam-faces formed at 17 17 on the upper side of each of the said dogs and when said collar is rotated bringing said cam-faces in contact. The action serves toforce. said dogs outward, causing the sameto disengage their threaded faces from the threaded stem 10. When the cam-collar is "rotated inthe opposite direction, the camfaces'18 18 on the same come in contact with the threaded stem 10 and the hand-wheel 2 2 corresponding cam-faces 19 19, (see Fig. 4,) formed on the under side of said dogs, and

'forces'said dogs inward toward the center,

causing the same to engage said stem 10.

The piston 21 is fixed to the lower end of is fixed to the upper end of said stem. A

spiral spring 23 is arranged to act upon said-f its stroke and the dogs snapped into position machinery or by a partial turn of the cam-collar, securely holding the piston in position against the tension of the spring 23. The head may then be removed and the cup filled, after which it is only necessary to screwthe head back into place, turn the cam-collar backward to withdraw the dogs from the piston-stem, and the cup is then in condition to Work automatic ally to'gradually and constantly discharge its contents at a given speed into the running other parts to which it may be connected, the volume of the discharge being nicely adjusted by simply regulating the controllin cock inthe discharge-neck of the cup.

If at any time it should be desired to force thegrease quicker or in larger quantities than was possible. by the automatic action, all that is necessary to be done is to give the cam-collar a partial turn, throwing the dogs into con-- nection with the stem, and then by operatin the hand-Wheel the piston may be screwed down as in the ordmary grease-cup above mentioned.

The device is extremely simple, practical, and efiicient and by its construction may be readily transformed from. an automatic to a positive discharge, which is often of great ad vantage in a device of this character Having thus described my invention, What I claim as new, and desire'to SQCUIG by Letters Patent, is

1. A grease-cup comprising a cup or casing, a piston, working therein, a stem on said piston, and reciprocable locking means for bold.- ing said piston in any desired position.

2. A grease-cup comprising a cup or casing, a spring-pressed piston working therein, a tl ireaded'stem 'for adjusting, said piston, and reciprocable locking means for holding said piston in any'adjusted position.

3. A grease-cup comprising a cup or casing, a piston working therein, a stem for ad usting,

said piston, reciprocable locking-dogs for engaging said stem, and means for reciprocating said dogs.

4. A-grease-cUp comprising a cup creasing, a piston working therein, a stem for adjusting said piston, 'reciprocable locking-dogs, and a cam-ring for moving said dogs into and out of engagement with said stem. v 1 a a 5. A grease-cup comprising a cup or casing, a piston working therein; a stem for adjusting said piston, reciprocable locking-dogsv to engage said stem, and an operating-cam cut out.

"to receive'said dogs.

6. A grease-cup comprising a cup or casing, a piston working therein, astem for adjusting said piston, a boss mounted on said cup or casing, locking-dogs mountedto reciprocate in said boss, and an operating-cam for said dogs fitting over said boss.

7. A grease-cup comprisinga cup or casing, a piston working therein, a stem for adjusting said piston, locking-dogs for said stem each provided with oppositely-arranged cam portions, and a cam-ring mounted to engage said cam portlons.

8. A grease-cup comprising a cup or casing, a piston workin therein, a stem for adjusting said piston, loc ing-dogs for said stem each provided with top and bottom faces provided with opposite cams, and a cam-ring provided with oppositely-disposed cams to engage the cams on said dogs. i

In testimony whereof I aflix my signature in presence of two Witnesses.

CLARENCE c. DAVIS. 

